Biological decomposition tank for sewage treatment

Abstract

The utility model discloses a biological decomposition pool for sewage treatment, which relates to the technical field of decomposition pools and aims to solve the problem that some existing biological decomposition pools for sewage have poor treatment effects. The key points of the technical solution are: it includes a pool body with an opening at the top, and a plurality of diversion and air supply parts are arranged in an array along the water flow direction in the pool body, and an S-shaped diversion channel for sewage to flow through is arranged in the diversion and air supply part, and the liquid inlet and liquid outlet of the S-shaped diversion channel are both provided with air supply ports. The utility model can achieve better biological decomposition treatment of sewage through the structural setting.

Description

Technical Field

[0001] The utility model relates to the technical field of decomposition tanks, and more specifically, to a biological decomposition tank for sewage treatment. Background Art

[0002] Wastewater treatment: The process of purifying wastewater so that it meets the water quality requirements for discharge into a water body or reuse.

[0003] There are usually various processes for sewage treatment, one of which is to treat it in a biological decomposition tank. After the existing sewage is passed into the biological decomposition tank, it is usually necessary to introduce gas into the biological decomposition tank so that the microorganisms in the sewage can contact with oxygen and decompose the sewage. However, the existing biological decomposition tank only introduces air into the sewage when in use, and usually there is not much time left for the sewage and air to mix. At the same time, after the gas is introduced into the water, it will float upward and be discharged from the sewage, so that the mixing of the flowing air and the sewage is insufficient, and the biological decomposition in the sewage is not sufficient, which leads to poor sewage treatment effect. Therefore, a structure is provided to solve the problem that some existing sewage treatment effects are poor using biological decomposition tanks.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a biological decomposition pool for sewage treatment.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a biological decomposition pool for sewage treatment, including a pool body with an opening at the top, characterized in that: the pool body is provided with a plurality of diversion and air supply parts distributed in an array along the water flow direction, the diversion and air supply parts are provided with an S-shaped diversion channel for sewage to flow through, and the liquid inlet and the liquid outlet of the S-shaped diversion channel are both provided with air supply ports.

[0007] The utility model is further configured as follows: the liquid inlet of the S-shaped flow guiding channel is located at the top, and the liquid outlet of the S-shaped flow guiding channel is located at the bottom.

[0008] The utility model is further configured as follows: the diversion and air supply part includes a front plate and a rear plate arranged in sequence along the water flow direction, the top of the front plate is lower than the opening of the pool body and a liquid inlet of an S-shaped diversion channel is arranged between the front plate and the pool body, the liquid outlet of the S-shaped diversion channel is arranged between the bottom of the rear plate and the inner bottom surface of the pool body, and the top of the rear plate passes through the top opening of the pool body.

[0009] The utility model is further configured as follows: the flow guiding and air supplying part also includes a first air supply pipe located above the front plate and fixedly connected to the pool body, the bottom of the first air supply pipe is connected to an air guide pipe, the distance from the air outlet of the air guide pipe to the top surface of the front plate is greater than zero and is directly opposite to the top surface of the front plate.

[0010] The utility model is further configured as follows: a second air supply pipe located above the liquid outlet of the S-shaped guide channel is fixedly connected to the rear plate away from the front plate, and a first air outlet slit is provided directly below the second air supply pipe.

[0011] The utility model is further configured as follows: a third air supply pipe is fixedly connected in the S-shaped guide channel between the front plate and the rear plate, a second air outlet slot is opened directly below the third air supply pipe, a plurality of guide plates distributed along a vertical array are fixedly connected to the front plate and the rear plate above the third air supply pipe, the guide plates on the front plate and the rear plate correspond to each other one by one, and the cross-sectional shape along the width direction of the guide plate is set to an isosceles trapezoid, and the guide plate located on one side of the lower bottom edge of the isosceles trapezoid is fixed to the end face of the front plate or the rear plate.

[0012] The utility model is further configured as follows: a floating plate is hinged on the front plate located below the third air supply pipe, a floating block is fixedly connected to the bottom of the floating plate away from the hinge point of the floating plate, a limiting block is fixedly connected to the rear plate and can abut against the bottom surface of the floating plate as it rotates, a water gap for sewage to flow through is surrounded between the floating plate and the limiting block, and the opening degree of the water gap is proportional to the speed of air outlet from the second air outlet gap.

[0013] In summary, the utility model has the following beneficial effects:

[0014] With the help of the S-shaped diversion channel, the time required for sewage to pass through the diversion and air supply part can be extended, so that the sewage can be better mixed with the air. The liquid inlet and the liquid outlet of the S-shaped diversion channel are both provided with air supply ports. This arrangement ensures that the sewage entering the S-shaped diversion channel from the liquid inlet and the sewage flowing out of the S-shaped diversion channel from the liquid outlet will contact with the flowing air in turn, thereby improving the mixing degree of sewage and air, and thus making the sewage decompose and treat better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0018] Figure 4 for Figure 2Enlarged view of point B in the middle.

[0019] In the figure: 1. pool body; 2. S-shaped guide channel; 3. front plate; 4. rear plate; 5. first air supply pipe; 6. air guide pipe; 7. second air supply pipe; 8. first air outlet gap; 9. third air supply pipe; 10. second air outlet gap; 11. guide plate; 12. floating plate; 13. floating block; 14. limiting block. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] The sewage treatment uses a biological decomposition tank, such as Figure 1 and Figure 2 As shown, it includes a pool body 1 with an opening at the top, and a plurality of diversion and air supply parts are arranged in the pool body 1 and are distributed in an array along the water flow direction. The plurality of diversion and air supply parts can realize stable diversion of the sewage transportation process on the one hand, and can supply air to the sewage multiple times on the other hand, so that the mixing and contact of gas and sewage are more complete, thereby allowing the microorganisms in the biological decomposition pool to better contact with the air and realize sewage treatment. An S-shaped diversion channel 2 for sewage to flow through is arranged in the diversion and air supply part. The S-shaped diversion channel 2 is provided on the one hand for realizing stable diversion of sewage, and on the other hand, the time required for sewage to pass through the diversion and air supply part can be extended with the help of the S-shaped diversion channel 2, so that the sewage can be better mixed with the air. The liquid inlet and the liquid outlet of the S-shaped diversion channel 2 are both provided with air supply ports. This arrangement ensures that the sewage entering the S-shaped diversion channel 2 from the liquid inlet and the sewage flowing out of the S-shaped diversion channel 2 from the liquid outlet will contact with the flowing air in turn, thereby improving the mixing degree of sewage and air, thereby achieving a better effect of sewage decomposition and treatment.

[0022] like Figure 2-Figure 4 As shown, the liquid inlet of the S-shaped guide channel 2 is located at the top, and the liquid outlet of the S-shaped guide channel 2 is located at the bottom. This arrangement ensures that the sewage enters the S-shaped guide channel 2 along the top and flows out from the bottom of the S-shaped guide channel 2. When gas is fed into the S-shaped guide channel 2, the gas will flow upward along the S-shaped guide channel 2. Since the flow direction of the gas is opposite to the flow direction of the sewage, the gas can better contact with the sewage and mix into the sewage, so that the gas can better mix with the sewage. The guide and gas supply part includes a front plate 3 and a rear plate 4 arranged in sequence along the water flow direction. The top of the front plate 3 is lower than the opening of the pool body 1 and the liquid inlet of the S-shaped guide channel 2 is surrounded between the pool body 1. The bottom of the rear plate 4 and the inner bottom surface of the pool body 1 are surrounded by the liquid outlet of the S-shaped guide channel 2. The top of the rear plate 4 passes through the top opening of the pool body 1, and the S-shaped guide channel 2 is surrounded by the joint action of the front plate 3, the rear plate 4 and the pool wall of the pool body 1.

[0023] like Figure 2-Figure 4As shown, the diversion and air supply part also includes a first air supply pipe 5 located above the front plate 3 and fixedly connected to the pool body 1, the first air supply pipe 5 is connected to an air source, the bottom of the first air supply pipe 5 is connected to an air guide pipe 6, the distance from the air outlet of the air guide pipe 6 to the top surface of the front plate 3 is greater than zero and is directly opposite to the top surface of the front plate 3, the first air supply pipe 5 is used to connect with the external air source and guide the flowing gas to the required place, the air outlet of the air guide pipe 6 is in a long strip shape, and the air guide pipe 6 is used to guide the flowing gas in the first air supply pipe 5 to a place close to the sewage, so that the flowing air will be blown into the sewage, so that the sewage flowing through the liquid inlet of the S-shaped diversion channel 2 will be mixed with the flowing air, so as to achieve the mixing of the flowing air and the sewage.

[0024] like Figure 2-Figure 4 As shown, a second air supply pipe 7 located above the liquid outlet of the S-shaped guide channel 2 is fixedly connected to the rear plate 4 on the side away from the front plate 3, and a first air outlet slit 8 is opened directly below the second air supply pipe 7. The second air supply pipe 7 is connected to an air source, and the flowing air generated by the air source is sent into the second air supply pipe 7. The flowing air in the second air supply pipe 7 will flow out with the help of the first air outlet slit 8, and the flowing air flowing out of the first air outlet slit 8 will come into contact with the sewage flowing out of the liquid outlet of the S-shaped guide channel 2 again, so as to achieve mixing of air and sewage, so that the mixing of air and sewage is more complete, thereby ensuring a better effect of biodegradation treatment.

[0025] like Figure 2-Figure 4 As shown, a third air supply pipe 9 is fixedly connected in the S-shaped guide channel 2 between the front plate 3 and the rear plate 4, and a second air outlet slit 10 is opened directly below the third air supply pipe 9. The third air supply pipe 9 is connected to the air source and sends the flowing gas to the second air outlet slit 10 for outflow. The gas flowing out of the second air outlet slit 10 contacts and mixes with the sewage. A plurality of guide plates 11 distributed in a vertical array are fixedly connected to the front plate 3 and the rear plate 4 above the third air supply pipe 9. The guide plates 11 on the front plate 3 and the rear plate 4 correspond to each other one by one, and the cross-sectional shape along the width direction of the guide plates 11 is set to be an isosceles trapezoid. The guide plate 11 on one side of the lower bottom edge of the isosceles trapezoid is fixed to the end face of the front plate 3 or the rear plate 4, and an inclined surface is formed by means of the plane where the waist of the isosceles trapezoid is located, and a top opening is formed between the two guide plates 11, which opens upward and decreases gradually along the opening downward, and a bottom opening is also formed, which opens downward and decreases gradually along the opening upward. At the same time, a channel for sewage and air to flow through is surrounded between the upper and lower bases of the isosceles trapezoid, so that the top opening is used to collect solid impurities, and the bottom opening is used to collect and guide the floating gas at the bottom, so that the flowing air can stably enter the channel and stably mix with the sewage.

[0026] like Figure 2-Figure 4As shown, a floating plate 12 is hinged on the front plate 3 located below the third air supply pipe 9. The floating plate 12 is made of PE material and is hollow inside. This arrangement ensures that the floating plate 12 in the sewage in the pool body 1 can be subjected to stable buoyancy and float up. The bottom of the floating plate 12 away from the hinge point of the floating plate 12 is fixedly connected with a floating block 13 by adhesive. The floating block 13 is made of polyurethane. The high compression strength, good elasticity, high mechanical properties, anti-aging and corrosion resistance of this type of material are utilized to ensure that the floating block 13 has good and stable structural strength and service life. A support rod is fixedly connected to the pool body 1. A connecting hole that is sleeved on the support rod is opened on the floating plate 12. With the help of the joint action of the support rod and the connecting hole, a stable hinge is achieved between the floating plate 12 and the pool body 1. Under the action of the buoyancy of the floating block 13, the floating plate 12 away from the hinge point will float up. A The limit block 14 is against each other on the surface. When the floating plate 12 is against the limit block 14, the floating plate 12 is in a horizontal position and will slow down the flow rate of the sewage, so that the sewage can be more fully in contact with and mixed with the air in the S-shaped guide channel 2. A water gap for the sewage to flow through is arranged between the floating plate 12 and the limit block 14. During the downward flow of the sewage, the floating plate 12 will be pushed to open the water gap, so that the sewage can pass through the water gap. The opening degree of the water gap is proportional to the speed of the air outflow in the second air outlet gap 10. On the one hand, the air flowing out of the second air outlet gap 10 will be fully in contact with and mixed with the sewage. On the other hand, the flowing gas will push the floating plate 12 to open further when pushing the sewage to flow, so that the sewage can better flow out of the S-shaped guide channel 2. The greater the air flow rate, the greater the thrust applied to the floating plate 12, so that the degree of opening of the water gap is also greater.

[0027] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A biological decomposition tank for sewage treatment, comprising a tank body (1) with an opening at the top, characterized in that: The pool body (1) is provided with a plurality of flow guide and air supply parts which are arranged in an array along the direction of water flow, the flow guide and air supply parts are provided with an S-shaped flow guide channel (2) for sewage to flow through, and the liquid inlet and the liquid outlet of the S-shaped flow guide channel (2) are both provided with air supply ports.

2. The biological decomposition pool for sewage treatment according to claim 1, characterized in that: The liquid inlet of the S-shaped flow guiding channel (2) is located at the top, and the liquid outlet of the S-shaped flow guiding channel (2) is located at the bottom.

3. The biological decomposition pool for sewage treatment according to claim 2, characterized in that: The flow guiding and air supplying part comprises a front plate (3) and a rear plate (4) which are arranged in sequence along the water flow direction; the top of the front plate (3) is lower than the opening of the pool body (1) and a liquid inlet of an S-shaped flow guiding channel (2) is arranged between the front plate (3) and the pool body (1); the bottom of the rear plate (4) and the inner bottom surface of the pool body (1) are provided with a liquid outlet of the S-shaped flow guiding channel (2); and the top of the rear plate (4) passes through the top opening of the pool body (1).

4. The biological decomposition pool for sewage treatment according to claim 3, characterized in that: The flow guiding and air supplying part further comprises a first air supply pipe (5) located above the front plate (3) and fixedly connected to the pool body (1); the bottom of the first air supply pipe (5) is connected to an air guide pipe (6); the distance between the air outlet of the air guide pipe (6) and the top surface of the front plate (3) is greater than zero and faces the top surface of the front plate (3).

5. The biological decomposition pool for sewage treatment according to claim 3, characterized in that: A second air supply pipe (7) located above the liquid outlet of the S-shaped flow guide channel (2) is fixedly connected to the rear plate (4) on the side away from the front plate (3), and a first air outlet slit (8) is provided directly below the second air supply pipe (7).

6. The biological decomposition tank for sewage treatment according to claim 5, characterized in that: A third air supply pipe (9) is fixedly connected in the S-shaped guide channel (2) between the front plate (3) and the rear plate (4); a second air outlet slit (10) is provided directly below the third air supply pipe (9); a plurality of guide plates (11) distributed in a vertical array are fixedly connected to the front plate (3) and the rear plate (4) above the third air supply pipe (9); the guide plates (11) on the front plate (3) and the rear plate (4) correspond to each other one by one; the cross-sectional shape along the width direction of the guide plates (11) is set to be an isosceles trapezoid; the guide plates (11) on the lower bottom side of the isosceles trapezoid are fixed to the end surface of the front plate (3) or the rear plate (4).

7. The biological decomposition tank for sewage treatment according to claim 6, characterized in that: A floating plate (12) is hingedly connected to the front plate (3) located below the third air supply pipe (9); a floating block (13) is fixedly connected to the bottom of the floating plate (12) on the side away from the hinge point of the floating plate (12); a limiting block (14) is fixedly connected to the rear plate (4) and can abut against the bottom surface of the floating plate (12) when rotating with the floating plate (12); a water gap for sewage to flow through is surrounded between the floating plate (12) and the limiting block (14); the opening degree of the water gap is proportional to the speed of air outlet from the second air outlet slit (10).

Images